Tourism

Maryam,Salmanian,Arezoo,Golkar,Mozafar Mohammadkhani,jafar,Safakhah 세계문화관광학회 2010 Conference Proceedings Vol.11 No.0

According to tourism international organization report, countries income made by tourism has been increasingly developed in recent years. Nowadays tourism is the main power of economic development and growth in many countries and it diversifies the economy by providing opportunities and brings employment and income. According to statistics reported by this organization, tourism is of the main world industries next to oil and machinery industries and has had great role in solving economic problems by for example providing employment and income. This industry has been on main interest of governors in terms of macro investment due to its low cost and it is attempted to identify it. Our country in spite of having high capacities, has failed to keep pace with this growth and develop its internal and external tourism industry. In this study it is attempts to examine Iran‘s status with regard the fact that it has rich valuable natural and cultural treasuries by analyzing tourism importance in different countries. In addition, some recommendations are provided in order to improve some kinds of tourism which are more suitable for Iran with regard to its cultural and religious situation.

Evaluation of Microstructure, Mechanical and Thermal Properties of Ti–Zr–Pd–Cu and Ti–Zr–Pd–Cu–Bi Nanoglass Thin Films

Maryam Mohri,Mohammed Renda Chellali,Di Wang,Julia Ivanisenko 대한금속·재료학회 2022 METALS AND MATERIALS International Vol.28 No.7

High entropy alloy thin films have been gained attention recently due to their exceptional properties like high corrosion resistance,unique mechanical and physical properties. In this research, DC magnetron sputtering was used to fabricate two kindsof high entropy alloys thin films of Ti–Zr–Pd–Cu and Ti–Zr–Pd–Cu–Bi at two working pressure 2 and 5 mTorr. Structural,thermal, and mechanical properties of the Ti–Zr–Pd–Cu and Ti–Zr–Pd–Cu–Bi thin films deposited at room temperature usingDC magnetron sputtering have been considered in this research. The microstructural analyses using X-ray diffractometer,scanning, and transmission electron microscopies show that the size of glassy clusters and the chemical composition of thinfilms can be controlled by adjusting the sputtering pressure. The high entropy alloy thin films deposited at high pressuredisplayed nano-clusters with an amorphous structure. The elemental distribution obtained using atom probe tomographyillustrated that Bi atoms were segregated along with the columnar interfaces. Furthermore, Bi addition to the Ti–Zr–Pd–Cuthin film led to increase in thermal stability and decrease in the characteristic enthalpy of the nanoglass thin films. The thinfilms’ mechanical properties were evaluated by nano-indentation. The results indicated that the Ti–Zr–Pd–Cu–Bi nanoglassthin film had higher strength, hardness, and elastic modulus than the Ti–Zr–Cu–Pd thin film. It was suggested that latticedistortion and nano columnar structure caused to increase in the mechanical properties of Ti–Zr–Pd–Cu–Bi thin film.

The association of pro-oxidant/antioxidant balance and blood parameters in patients with beta-thalassemia major: a cross-sectional study

Maryam Parvizi,Maryam Deldadeh Moghaddam,Shiva Nazari,Hami Ashraf,Maryam Kazemi Aghdam 대한혈액학회 2023 Blood Research Vol.58 No.4

Background Oxidative stress due to iron accumulation in patients with beta-thalassemia major (BTM) causes complications such as tissue damage and destruction. This study aimed to assess the association between the serum prooxidant/antioxidant balance (PAB) and blood parameters in patients with BTM. Methods This cross-sectional study included 92 patients with BTM. In this study, PAB was measured using an enzyme-linked immunosorbent assay (ELISA). Serum ferritin, blood urea nitrogen (BUN), creatinine (Cr), alanine aminotransferase (ALT), aspartate aminotransferase (AST), thyroid-stimulating hormone (TSH), total cholesterol (TC), triglyceride (TG), complete blood cell count (CBC), and history of blood transfusion were recorded. The association of the blood parameters was assessed across the tertiles (T) of serum PAB (highest T vs. lowest T). Results The results showed that high serum ferritin was directly associated with serum PAB [odds ratio (OR), 12.80; 95% confidence interval (CI), 2.98‒54.91; T3 vs. T1]. Also, direct associations were found for high TC (OR, 4.97; 95% CI, 1.42‒17.32; T3 vs. T1), high ALT (OR, 4.95; 95% CI, 1.33‒18.46; T3 vs. T1) and high TSH (OR, 3.78; 95% CI, 1.10‒13.02; T3 vs. T1). Conclusion The findings of the present study showed that serum PAB levels were directly associated with ferritin, ALT, TC, and TSH levels. This indicates that improvements in blood parameters, especially ferritin and TSH levels, occur by ameliorating oxidative stress in patients with BTM.

Effects of Serum Vitamin D and Efficacy of Subcutaneous Immunotherapy in Adult Patients With Allergic Rhinitis

Maryam Joudi,Reza Farid Hosseini,Maryam Khoshkhui,Maryam Salehi,Samaneh Kouzegaran,Mansur Ahoon,Farahzad Jabbari Azad 대한천식알레르기학회 2019 Allergy, Asthma & Immunology Research Vol.11 No.6

Immunotherapy is the standard of treatment for long-life relief of symptoms of allergic rhinitis. Vitamin D may affect the outcomes of treatment. This study evaluated the clinical efficacy of subcutaneous allergen immunotherapy in adult patients with allergic rhinitis based on the serum level of vitamin D. Patients with persistent allergic rhinitis and positivity for skin prick test were evaluated by Sino-nasal Outcome Test (SNOT-22) and Mini Rhinoconjunctivitis Quality of Life Questionnaire (MiniRQLQ) before subcutaneous allergen immunotherapy and during the maintenance phase to assess the relation of the serum level of vitamin D and the clinical efficacy of immunotherapy. After immunotherapy, the greatest reduction in SNOT-22 scores were reported in patients with vitamin D sufficiency (39.0 ± 9.2), followed by vitamin D suboptimal provision (35.1 ± 12.1), insufficiency (25.0 ± 7.5), and deficiency (18.3 ± 6.0) (P < 0.001). The MiniRQLQ reduction in patients with vitamin D sufficiency, suboptimal provision, insufficiency, or deficiency was 30.7 ± 8.7, 27.1 ± 8.7, 20.0 ± 8.6, or 17.4 ± 7.1, respectively (P < 0.001). Both of SNOT-22 and MiniRQLQ scores decreased significantly following immunotherapy in patients with different levels of vitamin D. However, these effects were more pronounced when the level of vitamin D was sufficient.

A Novel Cell Disruption Approach: Effectiveness of Laser-induced Cell Lysis of Pichia pastoris in the Continuous System

Maryam Gazor,Seyed Siamak Ashraf Talesh,Alireza kavianpour,Maryam Khatami,Amin Javidanbardan,Seyed Nezamedin Hosseini 한국생물공학회 2018 Biotechnology and Bioprocess Engineering Vol.23 No.1

In biotechnological processes, often cell disruption has been an inevitable step as current host cells express most of the desired products intracellularly. Thus, an appropriate cell disruption technique must be selected considering different factors including the target product, process scale, and cell wall structure. In the current study, as a novel method, the efficacy of cell disruption via laser was tested qualitatively and quantitatively in batch and continuous systems, respectively. Laser-induced cell lysis can be a clean, rapid and convenient alternative to the other conventional disruption techniques. Our investigations in the continuous system with a flow rate of 800 μL/sec proved efficient (~ 90%) Pichia pastoris cell disruption at the wavenumber 1,064 nm with the energy input of 284 mW after four complete rounds of circulation. The main mechanism of cell disruption is assumed to be thermolysis via instant heat increase in the laser-treated spot. The results of the current study showed that continuous laser system could be applied in laboratory and industry scale for cell disruption.

The Effects of Hydro-Alcoholic Extract of Fenugreek Seeds on the Lipid Profile and Oxidative Stress in Fructose-Fed Rats

Maryam Mohammad-Sadeghipour,Mehdi Afsharinasab,Maryam Mohamadi,Mehdi Mahmoodi,Soudeh Khanamani Falahati-pour,Mohammad Reza Hajizadeh 대한비만학회 2020 The Korean journal of obesity Vol.29 No.3

Background: Metabolic syndrome (MetS) is a complex clinical disorder that can lead to an increase in oxidative stress. Patients with this syndrome are at risk of diabetes and cardiovascular disease. The Trigonella foenum-graecum L. (fenugreek) plant has many therapeutic effects, including anti-diabetic and antioxidant. The present study aimed to investigate the effects of the hydro-alcoholic extract of fenugreek seeds (HEFS) on dyslipidemia and oxidative stress due to high-fructose diet-induced MetS. Methods: In this experimental study, to induce MetS, animals received water containing 20% fructose for 8 weeks. After induction of MetS, 48 male Wistar rats (200–250 g) were randomized into six groups. HEFS was administered to animals at doses of 100 and 200 mg/kg orally for 4 weeks. Animal blood samples were collected to measure biochemical and antioxidant parameters of fasting plasma glucose (FPG), total cholesterol (TC), high-density lipoprotein cholesterol (HDL-C), low-density lipoprotein cholesterol (LDL-C), triglycerides (TG), malondialdehyde (MDA), glutathione peroxidase (GPX), catalase (CAT), and total antioxidant capacity (TAC). Results: The findings showed that the serum levels of FPG, TC, LDL-C, TG, and MDA were significantly reduced in HEFS-exposed groups compared with the control group (P<0.05). Also, significant increases in HDL-C, GPX, CAT, and TAC levels (P<0.05) were observed. Conclusion: Our results revealed that treatment with HEFS increases the levels of antioxidant enzymes, decreases FPG level, and at the same time, modifies the lipid profile in MetS. Therefore, HEFS may help to alleviate the risk of some chronic complications of this disease.

Healthy and Unhealthy Dietary Patterns Are Related to Depression: A Case-Control Study

Maryam Khosravi,Gity Sotoudeh,Reza Majdzadeh,Somayeh Nejati,Samaneh Darabi,Firoozeh Raisi,Ahmad Esmaillzadeh,Maryam Sorayani 대한신경정신의학회 2015 PSYCHIATRY INVESTIGATION Vol.12 No.4

ObjectiveaaMajor depressive disorder is the leading cause of disability around the world. The relationship between depression and dietary patterns has been reported in a few studies but with controversial results. This study aimed to investigate this relationship in an Iranian population. MethodsaaIn our study, 330 depressed patients (cases) and healthy people (controls) (1:2) were individually matched according to age, sex and area of residence. New cases of depression were recruited from two psychiatric clinics in Tehran. Interviewers went to each patient’s residential area, and invited qualified individuals to participate in the study as controls. Food intake over the past year was collected using a validated semi quantitative food frequency questionnaire. Dietary patterns were determined by the principal components method. Binary logistic regression was used to test the effect of dietary patterns on depression. ResultsaaWe identified two major dietary patterns by using factor analysis: the healthy and unhealthy dietary patterns. We categorized the scores of these patterns to quartiles. After adjusting for non-depression drug use, job, marital status, children number, and body mass index, the relations of depression and quartiles of two dietary patterns are significant (p=0.04 & p=0.01, respectively). Compared with participants in the lowest quartile, those in the highest quartile had significantly lower odds ratio (OR) for depression in healthy dietary pattern, and higher OR for depression in unhealthy dietary pattern. ConclusionaaThis study indicates that healthy and unhealthy dietary patterns may be associated with the risk of depression. The results can be used for developing interventions that aim to promote healthy eating for the prevention of depression.

Mn-doped ZnS synthesis in DABCO based ionic liquid: Morphology and electrochemical sensing performance for isoprenaline analysis

Maryam Sabbaghan,Masoumeh Ghalkhani,Mahshid Hosseini,Maryam Ghanbari 한국공업화학회 2021 Journal of Industrial and Engineering Chemistry Vol.95 No.-

ZnS nanostructures with Mn2+ doping (5%) have been prepared in ionic liquid (IL) through the refluxmethod. The undoped ZnS and Mn2+ doped ZnS (Mn.ZnS) nanostructures produced in the presence andlack of IL, were analyzed using X-ray diffraction, scanning electron microscopy, and Brunauer–Emmett–Teller methods. Then, the surface of the glassy carbon electrode (GCE) was modified by synthesized nanoZnS and Mn.ZnS and electro-activated by successive cyclic voltammetry (CV) in a NaOH solution. Thesensing ability of the modified GCEs towards isoprenaline (ISP) was examined by CV and differentialpulsed voltammetry (DPV) for which less over potentials with sharper redox currents were resultedcompared to the bare GCE. The optimized Mn.ZnS/GCE was stable in buffer solutions in the pH range of 2–8 and exhibited a linear response for ISP concentrations in the range of 0.5–30 mM with promisingsensitivity of 2.1 mA/mM and low detection limit of 90 nM. Adequate selectivity for determining ISP in thepresence of other biological compounds such as ascorbic acid, uric acid at pH 5.0 confirmed the potentialapplicability of Mn.ZnS/GCE for ISP sensing in real biological samples. Finally, an electrochemicalmechanism for the catalytic oxidation of ISP was proposed.

Development of an electrochemical fentanyl nanosensor based on MWCNT-HA/ Cu-H3BTC nanocomposite

Maryam Akbari,Maryam Saleh Mohammadnia,Masoumeh Ghalkhani,Mohammad Aghaei,Esmail Sohouli,Mehdi Rahimi-Nasrabadi,Mohsen Arbabi,Hamid Reza Banafshe,Ali Sobhani-Nasab 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.114 No.-

Fentanyl is a potent narcotic drug with the same effects as morphine or heroin, but it’s significantly morepotent than these drugs. That means a tiny dose can have a dangerous impact and is also lethal, so it isessential to measure it. In this work, we have developed a new electrochemical sensor to measure thisdeadly drug utilizing a nanocomposite of multi-walled carbon nanotube, hydroxyapatite, and copperbasedmetal–organic framework (MWCNT-HA/Cu-H3BTC). The nanocomposite was first examined byX-ray diffraction, field emission scanning electron, Infrared, and Raman spectroscopic techniques. Theglassy carbon electrode (GCE) modified with MWCNT-HA/Cu-H3BTC was employed to determine fentanylin aqueous solutions. The highest oxidation current was generated for fentanyl at GCE/MWCNT-HA/Cu-H3BTC compared to the GCE, GCE/MWCNT, GCE/MWCNT/HA, and GCE/Cu-H3BTC. The GCE/MWCNT-HA/Cu-H3BTC showed a linear relationship between the concentration and the oxidation current of fentanylin the 0.01 to 100 lM with a detection limit of 3 nM. Finally, the fentanyl quantification in blood serumsamples was successfully performed. The GCE/MWCNT-HA/Cu-H3BTC’s reproducibility and stability wereindeed excellent.

Effect of Cucumber Mycorrhiza Inoculation under Low and High Root Temperature Grown on Hydroponic Conditions

Maryam Haghighi,Maryam Mozafariyan,Behzad Abdolahipour 한국작물학회 2015 Journal of crop science and biotechnology Vol.18 No.2

Cucumber is a subtropical vegetable sensitive to high and low root temperature. Additionally, mycorrhiza with beneficial effect on plant growth can increase plant tolerance to stress. This experiment was carried out as a factorial design based on CRD to study the effect of mycorrhiza density (0, 1,000 spores and 2,000 spores) on cucumber (Cucumis sativus cv. Super N3) under low (15°C), high (35°C), and optimum (25°C) temperature root zones. The result showed that low and high root zone temperatures decreased shoot and root fresh weight, chlorophyll content, and antioxidant activity compared to optimum temperature, while the phenols of shoot and NR activity increased in low and high temperature, respectively, as compared to optimum temperature. Both mycorrhiza inoculation (1,000 and 2,000 spores) increased shoot and root fresh weight while mycorrhiza with 1,000 spores increased antioxidant activity and phenol content and NR activity had no influence by mycorrhiza symbiosis. Mycorrhiza inoculation increased SPAD value at optimum temperature. FV/FM reduced by mycorrhiza with 2,000 spores at low and high temperature stress. Total phenol content increased at all temperature levels by mycorrhiza inoculation. Mycorrhiza with 1,000 spore increased antioxidant activity of leaves at all root zone temperatures. NR activity increased with both mycorrhiza inoculation at optimum temperature and decreased at high root zone temperatures. In general, our results showed that mycorrhiza symbiosis had a desirable effect on cucumber culture at low and high root zone temperatures.